MESON Chess Problem Database

Problem Display
PID: 95079 (1BQ1Br2/2r2pN1/1pNk1p2/3n4/1pp5/4nK2/4R3/3R4 w - - 0 1)

Pimenov, Sergey Ivanovich

Umnov, Evgeny Ivanovich

Pravda Vostoka, 1929

1BQ1Br2/2r2pN1/1pNk1p2/3n4/1pp5/4nK2/4R3/3R4

#2

8 + 10

6490 yacpdb 2009
56 The Problemist 2013

SOLUTION

  • SOUND
  • Keys
    • 1.Sa5!
      • threat
        • 2.Qxc7#
      • 1...Kc5
        • 2.Sb7#
      • 1...Ke5
        • 2.Sxc4#
      • 1...Ke7
        • 2.Sf5#
      • 1...Sxd1
        • 2.Sb7#

There are these versions: 146509

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Actual
    • S(D);
    • Threat
      • QAB1(G),XR(h)
    • Vars
      • K(f);N_SPINS(d),S_FLIGHT::S(D)
      • K(f);N_SPINS(d),P_SPINS(a),S_FLIGHT::S(D),XP(c)
      • K(f);N_SPINR(h),N_SPINS(d),P_SPINS(a),S_FLIGHT::S(E)
      • S(a);N_SPINS(d),XR(A)::S(D)
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Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).